Stirling-PDF

PDF Toolkit is a self-hosted suite of PDF tools, based on the open-source Stirling PDF project and an alternative to Adobe Acrobat for everyday document work. It runs locally in your browser against your own server and covers a broad range of operations: merge and split, rotate, reorder and remove pages, convert PDFs to and from images and office formats, compress and optimize, add or remove passwords and permissions, watermark, OCR scanned documents, fill forms, and sign. Because everything is processed on infrastructure you control, sensitive documents never leave your environment.

StoresWiki LLC provides PDF Toolkit as a managed, privately hosted service. We deploy a secured instance, keep it updated as new tools and fixes land upstream, monitor it, and maintain the deployment, so your team always has a dependable document workbench. Self-hosting means no documents are uploaded to a third-party web tool, and there are no per-user or per-document SaaS fees.

It fits any team that regularly manipulates PDFs and cannot risk sending confidential files to public online converters, wanting a complete, owned PDF toolset with predictable cost.